chemistry MCQs – Page 60

Practise multiple-choice questions from chemistry for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemistry Mcqs
1181. The criteria for aromaticity is presence of_________?
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A. Cyclic structure

B. Unsaturations

C. Presence of 4n? electrons

D. Presence of 4n+2? electrons
1182. The most powerful oxidizing agent among the halogens is__________________?
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A. F2

B. Cl2

C. I2

D. Br2

1183. Which of the following statements is incorrect about halogens ?
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A. All the halogens react with noble gases to form their halides

B. All the halogens have electronic conviguration ns2p5

C. All are non-metals

D. They have high electron attinity and ionization energy

1184. Ethanol and methanol can be distinguished by a__________________?
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A. Tollens test

B. Lucas test

C. Iodoform test

D. Benedicts test

1185. Soil pollution is caused by:_________?
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A. Ozone

B. Aerosol

C. PAN

D. Acid rain
1186. The Boiling Point of Ethyl Alcohol is_________?
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A. 58C

B. 56C

C. 78C

D. 73C

1187. When the radiation of light is passed through a prism, it undergoes __________?
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A. interference

B. diffraction

C. refraction

D. reflection

1188. The element used for the formation of alloys is__________?
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A. Mercury

B. Chromium

C. Iron

D. Calcium

1189. Cyclopentene is a _________?
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A. Alicyclic

B. Aliphatic

C. None of These

D. Aromatic

1190. Who used the term Concentrationwindow to draw the arbitrary lines of demarcation
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A. Schwartz

B. S.E.Manhan

C. Einstein

D. Dr.A.Walash

1191. The source of the Suns energy is the process of ____________?
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A. Nuclear fission

B. Nuclear fusion

C. Thermionic emission

D. Photoelectric emission

1192. diamond got brilliance due to following reason?
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A. refraction

B. dispersion

C. all of the above

D. reflection

1193. Which of the following is a soft Coal?
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A. Bituminous

B. Lignite

C. Anthracite

D. Peat

1194. In Bosch Process, that is used to separate the Hydrogen gas from water Gas, the catalyst is used ______?
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A. Pt

B. FeO

C. CrO

D. Both B&C
1195. Law of mass action was proposed by Goldberg and Peter Waage in _________?
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A. 1864

B. 1888

C. None of These

D. 1866

1196. Positron has __________charge.
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A. +ve

B. None of them

C. #NAME?

D. Neutral

1197. The type of hybridisation of boron in diborane is______?
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A. Sp3- hybridisation

B. Sp3d2- hybridisation

C. Sp2- hybridisation

D. Sp- hybridisation
1198. Main use of salt in diet is to : ___________?
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A. produce small amount of hydrochloric acid required for digestion

B. inclease solubility of food particles in water

C. increase the taste

D. ease the process of cooking

1199. Which of the following statement is correct ?
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A. size of Cl atoms > Cl- ion

B. size of Na+ ion < Na atom

C. size of Na atom < Na+ ion

D. Cl- < Na+

1200. Why do we determined the boiling point of a liquid?
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A. None of These

B. To Check temperature

C. To check its Purity and nature

D. To check its Acidity and Basicity